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Finding the Fourth Proportional to 104,137.19, 143,710.01 and 56,390.54

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Solution

The fourth proportional to 104,137.19, 143,710.01 and 56,390.54 is: 77,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,137.19 : 143,710.01 = 56,390.54 : x
  2. Step 2: Convert to fraction form
    104,137.19/143,710.01 = 56,390.54/x
  3. Step 3: Cross multiply
    104,137.19x = 143,710.01 × 56,390.54
  4. Step 4: Simplify right side
    104,137.19x = 8,103,884,785.35
  5. Step 5: Solve for x
    x = 8,103,884,785.35/104,137.19
  6. Step 6: Final answer
    x = 77,819.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.